Aerial photo taken on Dec. 1, 2016 shows the main canal of the central route of China's south-to-north water diversion project crossing through the city of Jiaozuo, central China's Henan Province. The central route of the project has supplied water to about 42 million people since December of 2014. A total of 6.09 billion cubic meters of water has been delivered to Beijing and Tianjin municipalities and the provinces of Hebei and Henan. (Photo/Xinhua)
